Technical gazette, Vol. 32 No. 5, 2025.
Original scientific paper
https://doi.org/10.17559/TV-20241021002082
Construction of Urban Green Infrastructure (GI) Based on Waterlogging Security Pattern: A case study on Jiaozuo City
Kai Wang
; College of Architecture, North China University of Water Resources and Electric Power, Zhengzhou 450011, China
*
Yan Wu
; College of Architecture, North China University of Water Resources and Electric Power, Zhengzhou 450011, China
Can Zhao
; College of Architecture, North China University of Water Resources and Electric Power, Zhengzhou 450011, China
* Corresponding author.
Abstract
Coordinating the spatial layout of green infrastructure (GI) and its functional coupling with the rainstorm process in a comprehensive way is an important way to solve the problem of urban flood disasters. Taking Jiaozuo City, Henan Province as an example, by establishing the SCS Hydrological Model, the flood-producing areas, potential runoff corridors and confluence nodes in the study area are identified, the potential inundation range of rainstorms under different rainfall frequency is simulated, and a rainstorm security pattern is established to macroscopically indicate the key positions for urban flood control. Starting from the perspective of site suitability, combined with terrain data, hydrological data, socio-economic data and the rainstorm security pattern, an urban adaptive planning method for suitability evaluation of green infrastructure construction based on rainstorm process simulation is proposed, providing a new optimization path for reconstructing the spatial pattern of regional green infrastructure. The results show that the central urban area of Jiaozuo City is relatively safe due to terrain advantages. The areas with extremely high rainstorm risk and high rainstorm risk total 10.5 km2, which are mainly distributed along the river channels, posing a greater flood risk to the counties under the jurisdiction of the southeastern part of the city. The suitable areas for GI construction show two characteristics of distribution along rivers or lakes and concentrated distribution. The extremely high suitability areas, and high suitability areas account for 12.3% of the total urban area, are mainly concentrated in the large tracts of farmland in the east of Wuzhi County, the south of Xiuwu County and Wen County.
Keywords
green infrastructure; rainstorm process simulation; suitability evaluation; spatial pattern
Hrčak ID:
335068
URI
Publication date:
30.8.2025.
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